The agricultural sector is one of the areas that has been highlighted as requiring a sustainability transition. For these kinds of transitions to succeed over the long-term, farmers need to be able to adapt to the required changes. Identifying which individual and institutional aspects are important for farmers' adaptive capacity and willingness to adapt is therefore an essential step in gaining insight into the role of farmers’ agency in transition processes and their long-term sustainability. So far, adaptive capacity literature has mainly focused on adaptive capacity in relation to climate change or individual innovations, thereby leaving a knowledge gap on adaptive capacity in relation to sustainability transitions. In this study, we aim to address this by deepening our understanding of these aspects through 24 in-depth, semi-structured interviews with English farmers and organisations in the context of the post-Brexit agricultural transition. Whilst we found many similarities with previous adaptation literature in the context of climate change and individual innovation, we also found aspects that have not been prominent and thus seem to be specific for adaptation in relation to sustainability transitions. These include the dual role that access to finances and information can play; land ownership status in terms of having the right to implement adaptation measures; state of mind; feeling respected, appreciated, and understood; perceived level of control and ownership; and considerations of (global) consequences. Further research is needed to strengthen and further develop our findings, for example through case studies in other geographical locations or sectors.